Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 63, No. 4, 2004, pp.819-826
Published online, 9th February, 2004
DOI: 10.3987/COM-03-9984
Synthesis of 2,3,8-Trisubstituted 7H-Isoindolo[5,6-g]quinoxaline-5,7,9,11(8H)-tetraones

Heesoon Lee,* Sungmoon Cho, Byeonggil Choi, Kwon Namgoong, and Jae-Kyung Jung

*College of Pharmacy, Chungbuk National University, Cheongju 361-763, Korea


Oxidation of 3-methyl- or 7,8-dimethylbenzo[g]quinoxalinedione produced the unusual product, dihydroxybenezo[g]quinoxaline-5,10-dione- carboxylic acid or dicarboxylic acid. This process was used for the synthesis of a series of 2,3,8-trisubstituted isoindolo[5,6-g]quinoxalinetetraone derivatives.